People walk near the entrance to the venue of the United Nations climate change conference, known as COP29, ahead of the summit beginning in Baku, Azerbaijan November 10, 2024. REUTERS/Murad Sezer BAKU (Reuters) - The annual U.

By Gloria Dickie and Kate Abnett (Reuters) -Nearly 200 countries will gather next week for the U.N. climate summit, COP29. Reaching a consensus for a deal among so many can be difficult. Here are some of the major players and negotiating blocs involved in the COP29 summit starting Nov.